Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional mechanic .. (1919)
Yates, Raymond F. (Raymond Francis), 1895- ed · New York, The Norman W. Henley Pub. Co. · leaf 308
he model, eachcolor representing some distinct evolution of the craft.A chart on shore tells the operator what each color meansso that he can guide his signals accordingly. The othermethod involves the use of a clock-work mechanism tooperate the control fingers, with a s^Tichronous mechan- A Model…
Machinery
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